Wrench



J. H. LAGREID AND 0. BECKLIN.

WRENCH. APPLICATION FILED uov.25, 1918.

INVENTOR Oscar Back/p2 John If, Lagread.

TTORNEY Patented Mar. 16, 1920.

JOHN H. LAGREIDAND OSCAR BECKLIN, F SEATTLE, WASHINGTON.

WRENCH.

Specification of Letters Patent. Patented Mar. 16, 1920.

Application filed November 25, 1918. Serial No. 264,012.

To all whom may concern:

Be it known that we, JOHN H. LAGREID and Qscnn BECKLIN, subjects oir'the King of Norway and the King oi Sweden, respectively, and rsidents oi' the city of Seattle, county of Kn g and State of Washington, have invented certain new and useful improvements in Wrenches, of which the following is a'specifi'cation.

Quf invention relates to wrenches and consists of a wrench provided withmcans whereby it may be very quickly and very conveniently adjusted for ditie rent sizes.

The object of our wrench is to provide a strong and convenient wrench which may be quickly adjusted for different sizes and when adjusted may be securely locked. do ing this all by simple, practical mechanisms.

The features of our invention which we consider novel, will be particularly pointed out in the claims. In the accompanying drawings we have shown our invention embodied in the type of construction which we now prefer to use and will describe such con struction in detail.

Figure 1 is a side view of the wrench, with portions thereof in section and cut away in order to better Show the details thereof.

Fig. 2 is a section taken upon the line 2-4 of Fig. 1.

Fig. 3 is an end 'iew taken from the view point shown at 3-3 of Fig. 1.

Fig. i is a view of a portion of the back edge as indicated by the line of Fig. 1.

The wrench, as herein, shown, is provided with an inner jaw and an outer jaw 20, which are toothed or roughened, so that it may grip any object upon which it is placed and thus may be used as a pipe wrench. It Will be evident, however, that the principles of our invention may be used as well in a wrench which is not a pipe wrench, as in one which is a pipe wrench. Its scope is, therefore, not limited to application upon pipe wrenches.

' The inner aw 10 is secured to or formed integral with the handle bar 1. The outer jaw is secured to or formed integral with a shank 2, which lies alongside of the handle bar. The outer end of this shank and the outer jaw carried thereby, is secured against lateral movement bv means of a retaining guide 3, which is carried by the outer end of the handle bar 1.

This guide is enough larger than the shank 2 in one direction to permit a slight movement of the shank toward'and. from the handle bar. To normally hold this shank toward the handle bar we have shown a spring, as 30, in the form of a flat bar secured by one end to the inner surfaceof the guide.

The inner end of the shank 2 is pivoted, through the medium of a pill 21, to afslidiiflg clip 4: which is mountedto slide freelyjup'on the handle bar 1; The edge of the handle bar which is towardt'he shank 2 of the outer and is provided with a segment 50' whichis toothed so as to engage with the rack 11 and thereby lockthe clip l'against sliding movement on the handle bar 1. Preferably, the teeth on the segment 50, as well'asthe teeth in the rack 11, are formed segments of'screw or V-teeth. The recess 40 in'the clip 4: is of a size to accommodate this segment lock and to permit its being thrown upward so as to disengage it from the rack 11. The pivot axis of this locking bar 5 extends in the same direction as the handle bar and the shank 2.

The axis of the locking bar 5 is preferably located toward one side of the central plane of the handle end of the clip, and the rack 11 may be so located, so that when the locking segment 50 is turned up into the disengaged position, or that shown by dotted lines in Fig. 2, there will be room in the clip to accommodate it. I

The segment 50 extends radially somewhat beyond the pivot sections 51 of the locking bar, thus forming thrust shoulders l1, and the hollow in the clip l, into which this locking bar is placed, is provided with complemental shoulders, which shoulders take the end thrust between the segment bar and the clip l, due to the gripping action of the jaws upon a bar or pipe.

The end of the locking bar 5, which is toward the handle, projects from the clip and is so constructed that it may be readily engaged by the hand to turn it into either the locked or unlocked position. As herein shown, it is provided with a lateral arm 52, and the side of this arm which is toward the clip l is brought to a dull edge, as shown at 53, this being engaged by a recess 60 formed in a flat spring 6 which is secured by one end to the clip 4.

By these means of locking, the bar 5 is held in the position in whichithe segment 50 is engaged with the rack 11. This furnishes suflicient resistance to the movement oi the locking block 50 to prevent disengagement, once a slight positive force is applied thereto.

The method of operating this wr nch is evident. To adjust the jaws for different sizes it is necessary to throw the locking block 50 into the position shown in dotted lines in Fig. 2, that is, with the lateral arm 52 extending to one side of the wrench. In this position the clip et, and with it the outer jaw 20, may be readily moved utward or inward, and when it has been brought down snug upon the pipe, rod, nut, or other object which it is to engage, the locking bar is turned into the position shown in F i g. 1 and by full lines in Fig. 2. The teeth. upon the locking segment 50 will thus engage the rack teeth 11 and securely hold the two jaws in their relative adjusted positions.

The slight movement of the outer jaw and its'ishank toward and from the handle bar and inner jaw by locking upon the teeth 11, causes the wrench to more securely grip the pipe when pressure is applied to the handle to turn the pipe.

The locking bar 5 is inserted in place by a small block 7, completes the outer bearing.

secured after being which What we claim as our invention is:

1. In a wrench, in combination, a handle bar having the inner jaw on one end thereof, and having teeth on one edge forming a rack, an outer jaw, a clip slidable on'the handle bar, the outer jaw being pivoted upon said clip, said clip having a recess opening toward said teeth, and a locking bar extending lengthwise of the handle naled within the recess in said clip at one side or" the median line of the clip and handle bar, and having a toothed segment adapted by turning to be engaged with. and disengaged from the said rack, said lockbar having a pivot axis extending without said clip and carrying an operating arm upon its outer end.

2. In a wrench, in combination, a handle bar having the inner jaw carried on one end thereof and having teeth on one edge forming a rack, a clip slidable on the handle bar, and having a recess opening toward the handle bar, an outer jaw having a shank pi voted upon said clip, and a locking dog pi voted in said recess inthe sliding clip u 3011 an axis which extends parallel with the handle bar and offset laterally from a median plane of the handle bar and clip, said dog having a toothed segment, and adapted by turning to engage and disengage said rack, the looking parts of said dog being entirely inclosed within said clip, said dog having a pivot axis extending with-outthe clip and adapted to be engaged to shift the dog.

JOHN H. LAGREID.

OSCAR BECKLIN.

bar and j our-' 

